21342004403 has 2 divisors, whose sum is σ = 21342004404. Its totient is φ = 21342004402.

The previous prime is 21342004379. The next prime is 21342004427. The reversal of 21342004403 is 30440024312.

It is a balanced prime because it is at equal distance from previous prime (21342004379) and next prime (21342004427).

It is a cyclic number.

It is not a de Polignac number, because 21342004403 - 2⁶ = 21342004339 is a prime.

It is not a weakly prime, because it can be changed into another prime (21342004903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671002201 + 10671002202.

It is an arithmetic number, because the mean of its divisors is an integer number (10671002202).

Almost surely, 2^21342004403 is an apocalyptic number.

21342004403 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342004403 is an equidigital number, since it uses as much as digits as its factorization.

21342004403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21342004403 its reverse (30440024312), we get a palindrome (51782028715).

The spelling of 21342004403 in words is "twenty-one billion, three hundred forty-two million, four thousand, four hundred three".